Access 2007/2010 Template Extension

I wish to extend the an "off the shelf" database template for Microsoft Access 2007/2010. As there is some current functionality to export/import contacts from Outlook, this functionality should remain in tact. I would like to have the following done: > Split the Address field into Address1 and Address2 for street address > Add Categories / SubCategories fields with a separate administrative function to manage categories and subcategories. On the user side, once a main category is selected, the appropriate subcategories would then be populated for selection. Attached is the stock Access Template as well as the Category List.